Internal-combustion engine.



` T. H. RUDSBLL.

INTERNAL GOMBUSTION ENGINE.

APPLIATION FILED MAR.26,1912.

Patented Apr. 2, 92@ z MEETS-SHEET 1.

vwa Mio@ @www /7/. fammi-f7 T. H. RUSSELL. INTERNAL GOMBUSTION ENGINE.

PPLIOATION FILED MAR. 26, 1912. n

a'tented- Apr. 2L 1914.

2 EHEETS-SEEET 2 Hav/maj THOMAS HISLOF RUSSELL, OF MARION, INDIANA.V

Frio

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Aprl, i914.

Application `filed March 2G, i912. Serial No. 686,305.

T0 all yiv/mm il; muy vouw/n Be 1t known that l, THOMAS ll. Rossum, a citizen of Great Britain, residing at MarH ion, in the county ot Grant and State ot'- lndiana, have invented new and useful lmprovements in Internal Combustion Engines, of which the following is a specification.

This invention has relation to the type of engines utilizing a gaseous mixture as the motive medium, the purpose being to simplify the coi'estruction of this type oitI engines and to materially reduce the number of working parts.

The invention provides a novel 'torna ot valve mechanism designed most especially for engines of the four cycle type and embodying multiple cylinders so that a single valve may control the admission of the gaseous mixture to more than one cylinder as well as regulate the outflow otthe burnt gases therefrom.

The invention consists ot the `novel features, details ot construction and conibination of parts, which hereinafter will be more particularly .set forth, illustrated in the accompanying drawings, and pointed out in the appended claim.

Referring to the drawings, forming a part of the specification, Figure 1 is a vertical lon itudinal section ot a multiple cylinder engine of the four cycle type embodying the invention. Fig. 2 is a horizon-tal section on the line 2-2 of Fig. 1. Fig. 3 is a transverse section on the line 3&3 of Fig. 1. Fig. 4 is an enlarged section ot one of the'valves and the bushing or lining. Fig. 5 is an enlarged horizontal section of the parts shown in Fig. 4.

Corresponding and like parts are referred to in the following description, and indicated in all the views of the drawings, by the same reference characters. l

The engine illustrated is of the type em bodying four cylinders which are cast in pairs or blocks. The cylinders of each pair or block are dcsignated'by the numerals 1 and 2 and have the usual surrounding space through which a cooling medium is. circulated. A valve casing Bis located intermediate the cylinders of each pair and is formed therewith as a part of the block.

AThe valve c`asii'1g`3 is of cylindrical form and` is located at one. end of the bloeit and has a port 4 opening into each ofthe cyhnders. A rotary valve 5 is 'arranged to 0p understood crate in each ot' the valve casings 3 and consists oi a shell or hollow cylinder having a medial partition 6. Ports 7 and 8 are termed in the sides ot the rotary valve 5 on opposite sides ot the, partition 6 andr are adapted to alternately register with the ports ft ot the cylinders. Each valve casing 5% has an inlet port 9 at its upper end and an outlet or exhaust port 10 at its lower end. lhe gaseous mixture may be suppliedto the inlet 9 in any manner well understood in the art and the burnt gases may pass through the outlet 10 t0 a convenient point of discharge. The rotary valves 5 have a snug lit wit-hin their respective valve casings and are adapted to be rotated in any manner .from the crank shaft ot the engine. It is to be understood that each of the valves 5 makes one complete revolution foreach two complete revolutions of the crank shaft and the power transmitting means must be such asto maintain this relative movement. A recess 11 is formed in the outer side of each ot the valves 5 and is of a size correspond ing with the port 4l and registers' therewith during combustion and expansion of the gases. The recess 11 prevents carbon depositing upon the working surface of the valve. Tt is not. practically possible to cast the ports 4 in the cylinders with such accuracy as to obtain the best. possible results in tho operation of the engine, hence the upper portion of each valve casing is bored to receive a cylindrical bushing or lining 12 which has ports formed therein to register .with the ports ot the cylinders. The ports of the bushings or linings 12 may be iinished either by halud or machine so as to obtain the best possible results, after which the bushings or linings are pressed home into their respective valve easings. Longitudi nal grooves 13 are formed in the inner walls of the bushings or linings and receive packingl strips 14- of asbestos or other mate-rial so as to insure a close joint between the valve and its casing. The ends of the bushing are likewise grooved or rabbeted to receive packing gaskets 15 tor a like purpose,

endsof the bushing and the adjacent parts..

Each of the valves has a. rod or stem 16 to which is secured a worm gear 1.7 which is arranged to mesli with a worm 18 provided upon the crank shaft 19. It is to be that the mechanism illustrated dent to the variety of 'explosive engine em.-

ploying puppet valves. fil is also observed that the operationfof the engine .is rendermi noiseless so far as the valve mechanism is involved, since tliei'eis no soundvsueh as f produced by the action of puppet valves and the vtrip nieehanisin therefor including valve litters and the operating trains. fit is to be further understood that in the arrangggement of the parts the pistons ank so set as to operate in successive order From the foregoing description7 taken in connection with tlie' accompanying drawings,I the advan Cres o'l the construction and of the metilo .i :E operation will be readily apparent to ,'tliose skilled in the art to .which the invention appertain-f.. and While I have described the principle or opera-tion Itif the invention, together with the d'evi'ee which l, how consider to betlie best embodiment thereof, I desire to have it understood Having thus described tlie invention what l is elaimed as new, is

ln an internal combustion engine, the coinbination oi a cylinder having a. port, a cylindrieal valve easing* in communication interf mediate of itsends with the port of the eylinder and provided at opposite ends with ports for the inlet of the gaseous mixture and an outlet for the burnt gases, a cylindrical bushing` fitted snugly Within the valve' and haring` a port in line With/the port of the cylinder and provided at its ends and sides with packing, and a rotary valve arranged -Witliin the bushing', said valve being` hollow and having its ends in communication/fwith the ports .in the rel speetive endsof--the valve easing and provided with a medial partition and having ports in its sides upon opposite sides of said medial pa 'tition and at different points in its circumference tov alternately' register -ivitli the port ojl the bushing leading into the perl' of the cylinder.

ln testiinmiy whereof I allix my signature in presenee of two witnesses.

THON fi S l'ilSLOP. RUSSELL. lf'itnesses:

lvl'AriLni l'niisiiomi, lloniiiiii lili/UNS. 

